P2647: owner reports and bulletins

Powertrain (generic, all makes). We haven't written the explanation for this code yet. Below is what owners and manufacturers have filed with NHTSA.

Got P2647 on your scanner? Tell the mechanic your year, make, model and any symptoms and you'll get the likely cause and what to check first. Ask about this code.

What owners report to NHTSA

2 complaints filed with NHTSA mention P2647, 2 of them since 2015, across 2 different models. The component owners most often filed it under: engine.

Manufacturer service bulletins that name P2647

1 technical service bulletins and manufacturer communications filed with NHTSA mention P2647, from 1 makes. A bulletin means the manufacturer has documented a known cause or a fix procedure for that model. Examples:

  • HONDA ELEMENT (2003, 2004, 2005, 2006), bulletin 10098946: "SERVICE BULLETIN - THE MIL COMES ON WITH ONE OF THESE DTCS: P2646/P2651 (ROCKER ARM OIL PRESSURE SWITCH CIRCUIT LOW VOLTAGE). P2647/P2652 (ROCKER ARM OIL PRESSURE SWITCH CIRCUIT HIGH VOLTAGE). NOTE: THE SYMPTOM MAY BE I…

Sources: NHTSA Office of Defects Investigation complaint database and manufacturer communications file, snapshots September 2026. A complaint or bulletin that mentions a code is a report about that vehicle, not a statement that the code has one cause.